Conversion lens



FIG. 1 is a front right side perspective view of a conversion lens of the present invention;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is bottom plan view thereof.

Portions of the conversion lens shown by broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a conversion lens, as shown and described. 